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<html xmlns="http://www.w3.org/1999/xhtml">
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=872812
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<head>
  <title>Test for Bug 872812</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
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<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=872812">Mozilla Bug 872812</a>
<p id="display"></p>
<div id="content" style="display: none"></div>

<iframe id="svg" src="viewport-helper.svg"></iframe>

<pre id="test">
<script class="testbody" type="application/javascript">

var svg = document.createElementNS("http://www.w3.org/2000/svg", 'svg');
ok(svg, "SVG exists");
var a = document.createEvent('CustomEvent').initCustomEvent('', '', '', svg.viewBox);
ok(true, "CustomEvent exists and we are not crashed!");

</script>
</pre>
</body>
</html>
